iLounge has received an anonymous tip that the Personal Hotspot feature of iOS 4.3 will work on both the iPhone 4 and the iPhone 3GS. According to our source, who tested it using the first beta version of iOS 4.3, the feature works on the 3GS exactly as it works on the iPhone 4, including the ability to share the device’s 3G network connection over Wi-Fi. Notably, it is up to the individual carriers to support the feature, so while the feature…